package com.piesat.quake.business.mail;

import com.piesat.quake.business.device.model.EventData;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;

import java.io.File;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Service
public class MailService {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private JavaMailSender mailSender;

    @Value("${spring.mail.username}")
    private String from;

    public void sendEventMail(EventData eventData) {
        String errMsg = "<div>产生了新的地震事件</div>" +
                "<div></div>";
//        sendHtmlMail(userInfo.getEmail(), "新的地震事件", errMsg);
    }

    /**
     * 普通文本邮件
     */
    public boolean sendSimpleMail(String to, String subject, String content) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(content);
        //给自己抄送一份，防被当成垃圾邮件
        message.setCc(from);
        try {
            mailSender.send(message);
            return true;
        } catch (Exception e) {
            logger.error("发送简单邮件时发生异常！", e);
        }

        return false;
    }

    /**
     * 发送html格式邮件
     */
    public boolean sendHtmlMail(String to, String subject, String content) {
        MimeMessage message = mailSender.createMimeMessage();
        try {
            //true表示需要创建一个multipart message
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);
            mailSender.send(message);
            log.info(from+" "+to+" 邮件发送成功！");
            return true;
        } catch (MessagingException e) {
            log.error("发送html邮件时发生异常！" + e);
        }
        return false;
    }

    /**
     * 发送带附件的邮件
     */
    public boolean sendAttachmentsMail(String to, String subject, String content, String filePath) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            FileSystemResource file = new FileSystemResource(new File(filePath));
            String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
            helper.addAttachment(fileName, file);

            mailSender.send(message);
            return true;
        } catch (MessagingException e) {
            logger.error("发送带附件的邮件时发生异常！", e);
        }
        return false;
    }

    /**
     * 发送带静态资源的邮件
     */
    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            FileSystemResource res = new FileSystemResource(new File(rscPath));
            helper.addInline(rscId, res);

            mailSender.send(message);
            logger.info("嵌入静态资源的邮件已经发送。");
        } catch (MessagingException e) {
            logger.error("发送嵌入静态资源的邮件时发生异常！", e);
        }
    }

}